Compensating expansion roofing connection



W. B. SHARP.

COMPENSATING EXPANSION ROOFING CONNECTION.

NPPLIcATIoN FILED AUG. I. I919.

Tici.

Patented Mar. 16,1920.

A non/ms WALTER B. SHARP, OF MOUNT VERNON, YORK..

COEPENSATING- EXPANSION ROOFING CONNECTION.

ascents.

Specification of letters Patent.

1 Patented Mare. 16, 1920.

application filed August 1, 1919. Serial No. 314,642.

- To all whom it may concern:

Be it known that I, WALTER 'B. SHARP, a citizen of the United States, and a resident of Mount Vernon, in the county of Westchester and State of New York, have invented a new and Improved Compensating Expansion Roofing Connection, of which the following is a full, clear, and exact description.

This invention relates generally to a new and improved roofing connection, and relates more specifically to a connection to c0mpensate for relative movement between a nonmetallic covering and a roof.

Heretofore in applying a roof covering, such as felt or other composition, to the main roof, composed of concrete or other material, it has been the practice to lay the covering upon the roof and interpose a suitable composition adhesive' material therebetween for holding the covering in its proper position relative to the main roof. In such a construction, a relative movement is obtained between the covering and the main roof due to the difierencein coefficients of expansion of the covering and roof. This has caused much trouble in that the covering has become cracked, thus permitting moisture to find its way through to the roof beneath.

One of the objects of this invention is to provide 'a non metallic simple and inexpen-- sive means by which a covering may be applied to a roof and will allow relative movement between the covering and the roof, thus compensating for a movement caused by the difference in the relative coefficients of expansion of the main roof body and the covering therefor. 4

A further object of this invention is to provide a simple and inexpensive method for compensating for the relative movement between a roof and a covering therefor, due to difierence in the temperature coefficients :of the respective parts.

The above objects are accomplished by roviding a yielding connector interposed Eetween the roof covering and the main roof, the said connector having one end thereof connected to the roof and the other end connected to the covering. By providing such a connection, it would not be necessary to.

interpose the adhesive composition between the covering and the roof throughout the entire surface thereof.

Other objects and advantages will be ap parent from the following description, and the accompanying drawings in which similar characters of reference designate like parts and views.

Figure 1 is a top plan view indicating the spacing of the connectors with reference to ing the projecting end of the covering to the roof;

Fig, '5 is a sectional view of a modified form;

'Fig. 6 is a sectional view showing another modified form and disclosing a different araangement ofthe yielding connecting mem- In the drawings, a main roof 1 is shown, which may be of concrete or any other suitable material, and a covering 2, which may be of felt or any other suitable composition, is shown positioned thereupon and resting loosely thereon. If it is assumed that the covering 2 is composed of felt, it is usual to provide strips of felt having a certain width, and in covering the roof, it is usual to overlap the ends of the strips and interpose a sultable composition .adhesive material 3 therebetween.

In one of the forms of applicants invention, a yielding connector or strip 4 is provided, having one end v5 thereof connected to the main roof 1 by a suitable adhesive composition 6, or any other suitable means, and the other end 7 connected to the covering by a suitable means. In Fig. 2' a conand within'the composition adhesive matev the roof 1 is provided b stance.

rial 3. The connector 4 should be bent or formed intermediate the ends thereof so as to furnish a yielding connection between the covering and the main roof to permit relative movement therebetween and still maintain a connection. In the form shown in/ said figure, the connector 4 is formed inza Z shape. It is thus seen that the covering may be moved relatively to the main roof 1 without causing the breaking or cracking of the coverin but yet the connection is still maintained through the connector 4 between the covering 2 and the main roof 1.

In Fig. l, the connectors are shown as being spaced at suitable intervals along the overlapping ends of the covering 2. It is understood that the connectors may be con1- posed of any suitable material and may be of any desired width and length.

In order to obtain a yielding connection between the covering and the roof, it is not necessary that a separate connector be provided, but, .as shown in Fig. 4, one end 8 of one of the covering strips 2 may be used to function as a yielding connector. As shown in said figure, the end 8 extends beyond the point at which the overlapping strip 2 is connected by the composition adhesive material, and is turned under, and suitably secured to the roof 1 by a composition adhesive material 6, of other suitable sub- It is understood that any suitable number 'of covering strips may be provided, and that the said strips may overlap any desired distance, the essential feature in a construction as shown in Fig. 4 being that one of the ends extends beyond the point at which the overlapping strips are connected, the said rejecting end bein suitably secured to t e roof 1. It istoIie understood that in connecting the projecting end to the roof, a certain portion of the end will be free to move so that a relative movement may be obtained between the covering strips 2 and 2' and the roof 1.

There is shown in Fig. 5 another modification in which a projecting end'of one of the covering strips 2 is secured to the roof, but is turned in the opposite direction to that indicated in Fig. 4, there being pro-v vided a corrugated portion of the pro ecting strip between the point of connection with the roof and the point at which the overlapping strips 2, 2 are connected by the composltion adhesive material 3.

A further modification is shown in'Fig. 6, in which the connector 4 is in the form of a separate strip. Instead of having a Z-shaped form to permit relative movement between the covering and the'roof, relative movement between the covering .2, 2' and a half bend as shown in full lines. If esired, the end 9 of the connector .4 instead of being turned backward underneath the overlapping ends of the covering 2, 2, may be continued in the same neral direction, as indicated by the dottecI-line position .10, and be offset from that rtion of the connector which is positioned in the composition adhesive material 3 between the overlapping ends 11, 12 of the covering.

As indicated in plan in Fig. 3, the connector, which in this case comprises the proj ecting end of the roof covering, extends the entire length of the strip. If desired, how,- ever, certain portions of the stri maybe cut away to form spaces at suita le intervals between the connecting strip When the separate strip1 strip may alsoextend t length of the covering strip 2, if desired.

It is understood that in the construction above described, preferably, those portions of the coverin strips 2 between the overlapping ends, he loosely upon the roof, there being no adhesive material interposed therebetween.

It is thus seen that by providing a ielding connector having one end thereo connected to the roof covering and the other end thereof connected to the roof, such a connection compensates for any relative 4 is provi ed, said roughout the entire rtions.

movement between the covering and the roof having one end thereof secured to the covering and the other end thereof secured to the roof by a composition adhesive material. v

2. A roof connection for securing a nonmetallic covering upon a roof comprising a yielding flexible connector havi one end thereof secured to the covering an the other end thereof secured to the roof by an ad! hesive material.

3. In a device of the character described, a means for securing a composition felt covering upon a roof, said means including a yielding connector having one end thereof secured to the covering by an adhesive material and the other end thereof secured to the roof by an adhesive material.

4. In a device of the character described, a means for securing a non-metallic coverin upon a roof, said means including a yiel ing connector, said connector bemgbent and havin one end thereof connected to the covering y an adhesive material and the other endthereof secured to the roof by 1,ss4,17s I an adhesive material, to permit relative for connecting said strips together adjacent movement between the covering and theroof. said overlapping edges, and flexible means 5. In a device of the character described connecting, one of said edges to said roof 10 the combination with a roof and covering whereby the covering may move relatively 5 of non-metallic material formed in a pluto the roof.

rality of strips, said strips being arranged to have overlapping edges, of an adhesive WALTER B. SHARP.- 

